Bifurcated stent and delivery system
First Claim
1. A bifurcated stent, the bifurcated stent comprising:
- a primary stent section, the primary stent section being balloon expandable, the primary stent section having a tubular wall, a first end, and a second end, the first end defining a proximal opening, the second end defining a distal opening, the primary stent section being expanded from an unexpanded configuration to an expanded configuration, in the expanded configuration the primary stent section defining a primary flow path between the proximal opening and the distal opening, the tubular wall of the primary stent section defining a secondary opening; and
a secondary stent section, the secondary stent section being self-expanding, an end of the secondary stent section being engaged to a portion of the tubular wall of the primary stent section defining the secondary opening, the secondary stent section having an unexpanded configuration and an expanded configuration, the secondary stent section having a first length in the unexpanded configuration, the secondary stent section having a second length in the expanded configuration, the first length less than the second length, the secondary stent section being expanded to the expanded configuration after the primary stent section is expanded to the expanded configuration, in the unexpanded configuration at least a portion of the secondary stent section forming a portion of the tubular wall of the primary stent section, in the expanded configuration the secondary stent section being positioned within a secondary vessel of the bifurcation site and defining a secondary flow path, the secondary flow path being in fluid communication with the primary flow path through the secondary opening.
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Accused Products
Abstract
A bifurcated stent includes a first stent section and a second stent section. The first stent section is balloon expandable, has an unexpanded configuration, an expanded configuration, and a tubular wall defining a secondary opening. The secondary stent section is self-expanding and an end of the secondary stent section is engaged to a portion of the tubular wall of the primary stent section defining the secondary opening. The secondary stent section has an unexpanded configuration with a first length and an expanded configuration with a second length where the first length is less than the second length. The secondary stent section is expanded to the expanded configuration after the primary stent section is expanded to the expanded configuration. The secondary stent section forms a portion of the tubular wall of the primary stent section in the unexpanded configuration.
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Citations
18 Claims
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1. A bifurcated stent, the bifurcated stent comprising:
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a primary stent section, the primary stent section being balloon expandable, the primary stent section having a tubular wall, a first end, and a second end, the first end defining a proximal opening, the second end defining a distal opening, the primary stent section being expanded from an unexpanded configuration to an expanded configuration, in the expanded configuration the primary stent section defining a primary flow path between the proximal opening and the distal opening, the tubular wall of the primary stent section defining a secondary opening; and
a secondary stent section, the secondary stent section being self-expanding, an end of the secondary stent section being engaged to a portion of the tubular wall of the primary stent section defining the secondary opening, the secondary stent section having an unexpanded configuration and an expanded configuration, the secondary stent section having a first length in the unexpanded configuration, the secondary stent section having a second length in the expanded configuration, the first length less than the second length, the secondary stent section being expanded to the expanded configuration after the primary stent section is expanded to the expanded configuration, in the unexpanded configuration at least a portion of the secondary stent section forming a portion of the tubular wall of the primary stent section, in the expanded configuration the secondary stent section being positioned within a secondary vessel of the bifurcation site and defining a secondary flow path, the secondary flow path being in fluid communication with the primary flow path through the secondary opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bifurcated stent comprising:
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a first stent section, the first stent section having a tubular wall with a first geometry, the tubular wall defining a side branch opening, the first stent section being expandable from a predeployed state to a deployed state, in the deployed state the first stent section defining a primary flow path;
a second stent section, the second stent section having a tubular wall with a second geometry, the first geometry substantially similar to the second geometry, the second stent section being expandable from a predeployed state to a deployed state, in the deployed state the second stent section defining a secondary flow path, the secondary flow path in fluid communication with the primary flow path, the first stent section and the second stent section being expandable independently from one another; and
at least one linkage member, the at least one linkage member being integral with both the first stent section and the second stent section, the first geometry not comprising the at least one linkage member, the second geometry not comprising the at least one linkage member, the at least one linkage member linking an end of the secondary stent section to at least a portion of the tubular wall of the first stent section about the side branch opening, the at least one linkage member constructed and arranged to provide an articulated engagement between the first stent section and the second stent section. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification